include/classes/A4a/A4aExport.class.php

   1 <?php
   2 /****************************************************************/
   3 /* ATutor                                                                                                               */
   4 /****************************************************************/
   5 /* Copyright (c) 2002-2009                                                                              */
   6 /* Adaptive Technology Resource Centre / University of Toronto  */
   7 /* http://atutor.ca                                                                                             */
   8 /*                                                              */
   9 /* This program is free software. You can redistribute it and/or*/
  10 /* modify it under the terms of the GNU General Public License  */
  11 /* as published by the Free Software Foundation.                                */
  12 /****************************************************************/
  13 // $Id$
  14
  15 require_once(AT_INCLUDE_PATH.'classes/A4a/A4a.class.php');
  16 //require(AT_INCLUDE_PATH.'classes/zipfile.class.php'); // for zipfile
  17
  18 /**
  19  * Accessforall Export class.
  20  * Based on the specification at:
  21  *              http://www.imsglobal.org/accessibility/index.html
  22  *
  23  * @date        Oct 3rd, 2008
  24  * @author      Harris Wong
  25  */
  26 class A4aExport extends A4a {
  27         var $original_files = array();  //store all the primary/original resources in [id]=>[incrementer]=>[resource, language, type]
  28 //      var $alternative_files = array();       //secondary files aka. alternative, equivalent
  29
  30         /**
  31          * Get information for this content
  32          * @return the xml content
  33          */
  34         function getAlternative(){
  35                 $resources = parent::getPrimaryResources();
  36
  37                 foreach($resources as $rid => $prop){
  38                         $resources_types = parent::getPrimaryResourcesTypes($rid);
  39                         $temp = array();
  40                         $secondary_array = array();
  41                         foreach($resources_types as $rtid){
  42                                 $sec_resources['secondary_resources'] = parent::getSecondaryResources($rid);
  43                                 //determine secondary resource type
  44                                 foreach ($sec_resources['secondary_resources'] as $sec_id => $sec_resource){
  45                                         $current_sec_file = $sec_resource['resource'];
  46                                         $secondary_array['secondary_resources'][] = $current_sec_file ;
  47
  48                                         //add to secondary file array if it's not there
  49                                         if (!isset($this->original_files[$current_sec_file]) || empty($this->original_files[$current_sec_file]) ){
  50                                                 //TODO merge these values i think
  51                                                 $this->original_files[$current_sec_file ] = $sec_resource;
  52                                                 $this->original_files[$current_sec_file ]['resource_type'][$prop['resource']] = parent::getSecondaryResourcesTypes($sec_id);
  53                                         } else {
  54                                                 $this->original_files[$current_sec_file ]['resource_type'][$prop['resource']] = parent::getSecondaryResourcesTypes($sec_id);
  55                                         }
  56                                         //add this primary file ref, and the resources type to the secondary file
  57                                         $this->original_files[$current_sec_file]['primary_resources'][$prop['resource']] = $rtid;
  58 //                                      $this->original_files[$current_sec_file]['primary_resources'][$prop['resource']]['language_code'] = $sec_resource['language_code'];
  59
  60                                 }
  61                                 $res_type['resource_type'] = $rtid;     //could be 1+
  62                                 $temp = array_merge($prop, $res_type, $secondary_array);
  63                         }
  64                         if (!empty($temp)){
  65                                 $this->original_files[$temp['resource']] = $temp;
  66                         }
  67                 }
  68                 return $this->original_files;
  69         }
  70
  71         /**
  72          * Get all secondary files
  73          * @return array of secondary files that is being used in this->content.
  74          */
  75         function getAllSecondaryFiles(){
  76                 global $db;
  77                 $secondary_files = array();
  78
  79                 $sql = "SELECT DISTINCT secondary_resource FROM ".TABLE_PREFIX."primary_resources a LEFT JOIN ".TABLE_PREFIX."secondary_resources s
  80                                 ON a.primary_resource_id = s.primary_resource_id WHERE content_id=".$this->cid;
  81                 $result = mysql_query ($sql);
  82                 if ($result){
  83                         while ($row = mysql_fetch_assoc($result)){
  84                                 if (!empty($row['secondary_resource'])){
  85                                         $secondary_files[] = $row['secondary_resource'];
  86                                 }
  87                         }
  88                 }
  89                 return $secondary_files;
  90         }
  91
  92         // Save all the xml into an array.
  93         // key=filename, value=xml content
  94         function exportA4a(){
  95                 global $savant;
  96
  97                 $xml_array = array();   //array of xml
  98
  99                 // Get the alt content first.
 100                 $this->getAlternative();
 101
 102                 // Get original files' xml
 103                 foreach($this->original_files as $id=>$resource){
 104                         $orig_access_mode = array();
 105
 106                         foreach($resource['resource_type'] as $type_id){
 107                                 if (!is_array($type_id)){
 108                                         //primary resource will always have just on type
 109                                         $orig_access_mode[] = $this->getResourceNameById($type_id);
 110                                 }
 111                         }
 112                         $savant->assign('relative_path', $this->relative_path); //the template will need the relative path
 113                         $savant->assign('orig_access_mode', $orig_access_mode);
 114                         $savant->assign('language_code', $resource['language_code']);
 115                         $savant->assign('secondary_resources', $resource['secondary_resources']);
 116
 117                         // If this is an alternative, and it is mapping to
 118                         // 1+ original files.  Each of these mapping requires
 119                         // its own xml
 120                         if(isset($resource['primary_resources'])){
 121                                 foreach($resource['primary_resources'] as $uri=>$pri_resource_types){
 122                                         $savant->assign('primary_resource_uri', $uri);
 123                                         $savant->assign('primary_resources', $pri_resource_types);
 124                                         //A file can be both original and alternative, and each could represent diff language
 125                                         //Tried to resolve but the A4a v.2 only accept 1 language
 126 //                                      $savant->assign('language_code', $pri_resource_types['language_code']);
 127                                         //overwrite orig_access_mode
 128                                         $orig_access_mode = array(); //reinitialize
 129                                         foreach($resource['resource_type'][$uri] as $type_id){
 130                                                 $orig_access_mode[] = $this->getResourceNameById($type_id);
 131                                         }
 132                                         $savant->assign('orig_access_mode', $orig_access_mode);
 133                                         $xml_array[$id.' to '.$uri] = $savant->fetch(AT_INCLUDE_PATH.'classes/A4a/A4a.tmpl.php');
 134                                 }
 135                         } else {
 136                                 $savant->assign('primary_resource_uri', '');
 137                                 $savant->assign('primary_resources', '');
 138                                 $xml_array[$id] = $savant->fetch(AT_INCLUDE_PATH.'classes/A4a/A4a.tmpl.php');
 139                         }
 140                 }
 141                 return $xml_array;
 142         }
 143
 144         /**
 145          * Get resource name by id
 146          * @return      array
 147          */
 148         function getResourceNameById($type_id){
 149                 $orig_access_mode = '';
 150
 151                 switch($type_id){
 152                         case 1:
 153                                 $orig_access_mode = 'auditory';
 154                                 break;
 155                         case 3:
 156                                 $orig_access_mode = 'textual';
 157                                 break;
 158                         case 2:
 159                         case 4:
 160                                 $orig_access_mode = 'visual';
 161                                 break;
 162                         default:
 163                                 $orig_access_mode = '';
 164                 }
 165                 return $orig_access_mode;
 166         }
 167
 168 }
 169
 170 ?>